Machine Learning Engineer + Data Scientist + Software Engineer Interview Questions
Practice the exact questions companies are asking right now.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Answer core probability and statistics questions
Answer the following interview-style probability/statistics questions. Provide formulas and short explanations. 1) Bayes’ rule: State Bayes’ rule. Giv...
Design a Reliable Payment Processing System
Design a Reliable Payment Processing System Design a payment-processing service for merchants. A client creates a payment, the service submits it to a...
Explain Transformer and MoE Fundamentals
This question evaluates a candidate's conceptual mastery of modern deep-learning internals for large-language models, including distinctions between t...
Design Ad Frequency and Order Tracking
This question evaluates system-design competencies for building low-latency, high-throughput ad-platform components—specifically a real-time frequency...
Describe Key Behavioral Examples
Prepare to answer behavioral questions based on past internship or project experience. Common prompts include: 1. Tell me about a time when you disagr...
Design An Ad Creative Relationship Processing System
Prepare for a system design interview about processing ad creative plans, videos, keywords, and relationship results from an external model API. The p...
Answer Amazon-style behavioral questions
You are interviewing for a role at Amazon and are asked the following behavioral questions. Answer each using the STAR method (Situation, Task, Action...
Design a concurrent web crawler
System Design: Concurrent Web Crawler (Threads) Design and implement a basic web crawler that fetches pages concurrently using a thread executor (e.g....
Implement Queue Operations Using Two Stacks
Implement Queue Operations Using Two Stacks Process a sequence of queue operations using exactly two LIFO stacks as the queue's internal data structur...
Assign Tasks to the Minimum Number of Workers
Assign Tasks to the Minimum Number of Workers Problem Implement assignMinimumWorkers(tasks) -> workerIds. Each task is [startMinute, durationMinutes]....
How to prepare for AI-assisted coding interviews?
This question evaluates proficiency in integrating AI coding assistants and developer tooling with core software engineering competencies such as debu...
Answer Culture and Project Questions
Prepare answers for Anthropic's hiring-manager (HM) and culture interviews for a Software Engineer role. These are the two non-technical rounds in a f...
Exception Handling in a RESTful Service with @ControllerAdvice
This question evaluates a candidate's understanding of centralized error handling in RESTful API design, specifically using framework-level cross-cutt...
Design and Solve a Rotatable Jigsaw Puzzle
Design and Solve a Rotatable Jigsaw Puzzle Design the classes and a solve operation for a rectangular jigsaw puzzle. You are given all pieces, but not...
Resolve Conflict and Challenge Project Decisions
This question evaluates conflict resolution, ownership, stakeholder management, technical judgment, and the ability to earn trust and influence within...
Design an airline booking system
System Design: Airline Booking System Design an airline booking platform that lets travelers search for flights, book them, select seats, and modify o...
Plan for timed probability assessment
Timed Probability/Statistics Assessment Strategy Company: Optiver · Role: Software Engineer You are taking a timed online assessment of 30 probability...
Discuss Transferable Experience for a New Mobile Product Team
Discuss Transferable Experience for a New Mobile Product Team In a manager conversation for a new native mobile product team, you are asked about your...
Count segments and optimize 3-server assignment
There are two independent programming tasks. --- Problem 1: Transaction Segments You are given: - An integer n, the length of an array. - An integer k...
Implement a Distributed Rate Limiter
This question evaluates a candidate's ability to design and implement a distributed rate-limiting mechanism, testing knowledge of distributed systems,...